Electrical hair or massage brush



April 3, 192s. 1,664,457

A. LLOYD ELECTRICAL HAIR OR MASSAGE BRUSH Filed April 10. 1926 l i n Patented Apr. 3, 1928, 7 ik UNITED `STATES 1,664,457 PATENT OFFICE.

ALFRED LLOYD, OF LONDON, ENGLAND, ASSIGNOR T0 MILAN FRANCIS PRATT, Ol' ROCHESTER, NEW YORK.

ELECTRICAL HAIR OR MASSAGE BRUSH.

Application led April 10, 1926, Serial No. 101,142, and in Great Britain September 18, 1925.

This invention reiers to improvements in or relating to electrical. hair or massage brushes.

Heretofore it has been proposed to construct electrical hair brushes, with a projecting handle to be grasped by the user7 and having the electrical components located in the said projecting handle (or in a separate casing or device arranged to be connected to the brush) the circuit being completed through metallic bristles in the brush and through the hand of the user.

An object (inter alia) ot' my present invention is to provide a simple and compact form of electrical hair or message brush without a projecting handle i. e. of the torni known as military hair brushes; and to this end according to my present invention I arrange and mount the electrical components (suoli as a battery, trembler coil and if desired a variable resistance) in or on the back of the brush itself in suchwise that when the brush is gripped by the hand of the user and applied to the head or body of the user thereby the electrical circuit is completed, for example when the brush is grasped by the hand of the user' (in readiness for use) thereby a press contact or other suitable contact is operated by the said grip or grasp of the hand to render the brush electrically operative when applied to the head of the user.

One form of electrical hair brush of said military type in accordance with my present invention is illustrated in the accompanying drawings, in which Fig. l is a view in side elevation of the complete brush.

Fig. 2 is a plan view with the top cover or casing removed.

Fig. 3 is a vertical sectional view on the line 3-3 Fig. 2, and

Fig. 4 is circuit diagram of the electrical connections.

Referring to these drawings- Mounted on the underside or" a wooden or other insulating back or base A are a number of metallic bristles B, the heads of which are secured between a metallic plate C and a rubber or like face D. An external ring of ordinary bristles E is provided.

On the upper side of the brush back A is mounted a small dry battery F, one pole of which is earthed at F1 to a metallic cover G which forms the means by which the brush is grasped in the hand. The other pole F2 ot' the battery is connected through a metallic plate H to an adjusting screw J forming the contact for an armature K of a trembler coil L, one end of the primary winding of which is connected to the arma4 ture K whilst the other end is earthed to the cover G through the press button switch M, which is conveniently located for operation by the fingers when the brush is grasped in the hand and contacts when pressed inwardly with the metallic piece M1 in electrical connection with the cover G.

The secondary winding ot' the coil L is tapped at three points whence leads L1, L2 and L3 are taken to three studs over which works the switch arm M operated by a finger piece O projecting through the top of the cover G The switch arm M is electrically connected to a spring plate P pressing on a c011- tact Q which is in electrical connection with the plate C and consequently with the metallic bristles B. The other end of the secondary winding is earthed to the cover at R.

The cover G is made detachable from a metal rim A1, secured to the brush back A, by means of a thumb button S which when pressed releases a catch S1 from an aperture in the rim A1. y

To use the brush the three-way switch M is set by means of the finger piece O to give the desired current strength and the brush is then grasped in the hand, the press button contact N being pressed inwardly. Current thereupon flows in the primary circuit which is interrupted by the trembler armature K, thereby inducing a current in the secondary circuit which is completed through the hand and arm of the user.

Thus is provided according to the present invention a simple compact and reliable electrical hair o1` massage brush of the military type in which all of the electrical components are contained in the back of the brush and in a readily accessible manner.

What. I claim is l. A military type hair brush comprising electrically conductive bristles, a battery mounted on the back of the brush towards one end thereof with one pole of said battery connected through a press contact switch to a detachable metallic cover for the back of the brush and the other pole in contact with a plate in circuit with an adjusting screw for a trembler make and break device, an induction coil mounted on the back of the brush with one pole of the primary Winding connected to the armature of the make and break device and the other pole to the said metallic cover, a plurality ot tappings from the secondary winding connected to a multiple-Way switch with an operating handle projecting through the metallic cover and the latter being connected to the other end of the secondary Winding of the induction coil so that in use the secondary circuit is completed through the metallic cover and the hand and body ott' the user.

2. A military type hair brush comprising electrically conductive bristles, a battery mounted on the back of the brush towards one end thereof with one pole of said battery connected through a press contact switch to Leefbaar a detachable metallic cover for the back of the brush and theother pole in contact with a plate in circuit with an adjusting screw for a trembler make and break device, an induction coil disposed transversely of the brush across the end ot the battery with one pole of the primary Winding connected to the. armature of the make and break device and the other pole to the said metal-lic cover, a plurality of tappings from the secondary Winding connected to a multiple-Way switch with an opera-ting handle projecting through the metallic cover and the latter being connected to the other end ot the secondary Winding of the induction coil so that in use the secondary circuit is completed through the metallic cover and the hand and body of the user.

ALFRED LLOYD 

